Dr Winston O'Boogie;1858447 wrote:once again, a new mine takes much, much longer to be brought online than the few months since Trump came into office. Despite the grandstanding he's done over this one mine, he could have had absolutely nothing to do with it's startup. Also you'll notice, it's met coal - likely for export to China or replacing some other domestic coal that will now be going to China. Nothing to do with coal power plants.
The he fact is that coal doesn't even compare to natural gas for making electricity and regulations have nothing to do with it.
Straight Fuel BTU content to electricity kW production efficiency, you are correct.
The best coal power plant in the US with respect to efficiency is about 38.5% efficient.
A combined (multiple process) Natural Gas plant can operate at 44.5% efficient.
For effect, the coal number above is the best in the US, the Natural Gas number is average for the specific type of combined plant.
However, once you factor in cost ($/MMBtu) of coal vs Natural Gas, it costs about $25/MWh to make electricity by NG, and $20/MWh for coal.
So, you are not telling the whole story, which I assume you knew you weren't since you are in the industry.
Since Coal is cheaper to make electricity by about 25%, regulations absolutely have something to do with it and why NG competes with coal with regards to power creation.
This all hinges on the variability of NG cost. Coal is rather constant, NG fluctuates. There are periods where NG is cheaper to make electricity.
NG has to dip below $3/therm (MMBtu) before it is cheaper than coal for power generation.
You should really tell the whole story, especially when you are an expert.